ci: update machine images (#406)

* downgrade ubuntu images from 22.04 to latest 20.04
* upgrade macos image to 12.5.1

.circleci/config.yml

@@ -179,7 +179,7 @@ jobs:
 
   tests:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "tests"
     steps:
       - checkout-and-merge-to-main
@@ -394,7 +394,7 @@ jobs:
 
   integration-tests:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "integration tests"
     steps:
       - checkout-and-merge-to-main
@@ -662,7 +662,7 @@ jobs:
 
   tck-tests:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "TCK tests"
     steps:
       - checkout-and-merge-to-main
@@ -675,7 +675,7 @@ jobs:
 
   validate-docs:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "validate docs"
     steps:
       - checkout-and-merge-to-main
@@ -718,7 +718,7 @@ jobs:
 
   publish-tck:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "publish TCK"
     steps:
       - checkout
@@ -731,7 +731,7 @@ jobs:
 
   publish-docs:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "publish docs"
     steps:
       - checkout
@@ -836,7 +836,7 @@ jobs:
 
   e2e-tests:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "e2e-tests"
     steps:
       - checkout-and-merge-to-main
@@ -919,7 +919,7 @@ jobs:
 
   publish_native_linux:
     machine:
-      image: ubuntu-2204:2022.04.2
+      image: ubuntu-2004:2022.07.1
     description: "Build Native image on Linux"
     steps:
       - checkout
@@ -940,7 +940,7 @@ jobs:
 
   publish_native_macos:
     macos:
-      xcode: 12.5.0
+      xcode: 12.5.1
     description: "Build Native image on macOS"
     steps:
       - checkout